Not all government are against cryptocurrency. At least in the west countries in Europe are developed countries that have allowed bitcoin to be used by vendors and merchants. Though most government are corrupt but it don't take all of them to use bitcoins to aid them in their corrupt dealings.
The government is always looking for the best solution for its citizens, especially regarding the economy. One of the future solutions in trade between countries is the use of bitcoin. So the government must accept bitcoin because bitcoin has been accepted in many countries. One of the advantages of using bitcoin is to eliminate corruption, because the platform is decentralized and open so that it controls each other.